MOT gas Analysis

[James1975 2]

Can anyone tell me if these readings are ok?

 

if not, what can i do to improve the burning of the fuel?

Edited July 9, 2023 by James1975

[welshpug 1,657]

Those are very good, a little lean if anything, i thought the limit was 3.5!

 

They run best at around 1.5% co.

[James1975 2]

MOT man said  it was lean, i will turn the AFM in quarter, see how it runs.

[Leslie green 109]

Its 3.5% co after 86 , 4.5% before that